[sdiy] Analog polyphony question

[Don Tillman]

   From: "Tony Allgood" <oakley at techrepairs.freeserve.co.uk>
   Date: Tue, 14 Aug 2001 09:12:27 +0100

   I must say the polymoog does sound incredibly rich... with none of the
   nastiness associated with the BBD designs. Of course, the polymoog is
   much heavier as a result. Have I told you before how heavy the polymoog
   is... :-)

I've never physically opened one up, but I would think the major
reason for the PolyMoog's weight is that it's built with a separate PC
board for each key.

(Yet another one of the cool things about the PolyMoog is that they
put almost all the circuitry for a key on a custom chip.  So there's
more circuitry per key than one would typically expect, and the custom
chip is cost effective because of the quantities involved.  Great,
huh?  Yet the PolyMoog is actually built with a small PC board per
key, each with the one chip and a handful of passives.  Perhaps they
had an all discrete version of the board ready in case the chips
didn't pan out, I don't know.)

  -- Don

-- 
Don Tillman
Palo Alto, California, USA
don at till.com
http://www.till.com